Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients
Understanding the mechanisms that drive the change of biotic assemblages over space and time is the main quest of community ecology. Assessing the relative importance of dispersal and environmental species selection in a range of organismic sizes and motilities has been a fruitful strategy. A consensus for whether spatial and environmental distances operate similarly across spatial scales and taxa, however, has yet to emerge. We used censuses of four major groups of organisms (soil bacteria, fungi, ground insects, and trees) at two observation scales (1-m2 sampling point vs. 2,500-m2 plots) in a topographically standardized sampling design replicated in two tropical rainforests with contrasting relationships between spatial distance and nutrient availability. We modeled the decay of assemblage similarity for each taxon set and site to assess the relative contributions of spatial distance and nutrient availability distance. Then, we evaluated the potentially structuring effect of tree composition over all other taxa. The similarity of nutrient content in the litter and topsoil had a stronger and more consistent selective effect than did dispersal limitation, particularly for bacteria, fungi, and trees at the plot level. Ground insects, the only group assessed with the capacity of active dispersal, had the highest species turnover and the flattest nonsignificant distance−decay relationship, suggesting that neither dispersal limitation nor nutrient availability were fundamental drivers of their community assembly at this scale of analysis. Only the fungal communities at one of our study sites were clearly coordinated with tree composition. The spatial distance at the smallest scale was more important than nutrient selection for the bacteria, fungi, and insects. The lower initial similarity and the moderate variation in composition identified by these distance-decay models, however, suggested that the effects of stochastic sampling were important at this smaller spatial scale. Our results highlight the importance of nutrients as one of the main environmental drivers of rainforest communities irrespective of organismic or propagule size and how the overriding effect of the analytical scale influences the interpretation, leading to the perception of greater importance of dispersal limitation and ecological drift over selection associated with environmental niches at decreasing observation scales.
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dig-cirad-fr-606863 |
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Francia |
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Bibliográfico |
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Europa del Oeste |
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Biblioteca del CIRAD Francia |
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eng |
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forêt tropicale humide Insecta substance nutritive écologie forestière champignon du sol Champignon faune du sol Bacteria forêt tropicale biologie du sol dynamique des populations biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_3890 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_3044 http://aims.fao.org/aos/agrovoc/c_33550 http://aims.fao.org/aos/agrovoc/c_3145 http://aims.fao.org/aos/agrovoc/c_7169 http://aims.fao.org/aos/agrovoc/c_765 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_3093 forêt tropicale humide Insecta substance nutritive écologie forestière champignon du sol Champignon faune du sol Bacteria forêt tropicale biologie du sol dynamique des populations biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_3890 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_3044 http://aims.fao.org/aos/agrovoc/c_33550 http://aims.fao.org/aos/agrovoc/c_3145 http://aims.fao.org/aos/agrovoc/c_7169 http://aims.fao.org/aos/agrovoc/c_765 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_3093 |
spellingShingle |
forêt tropicale humide Insecta substance nutritive écologie forestière champignon du sol Champignon faune du sol Bacteria forêt tropicale biologie du sol dynamique des populations biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_3890 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_3044 http://aims.fao.org/aos/agrovoc/c_33550 http://aims.fao.org/aos/agrovoc/c_3145 http://aims.fao.org/aos/agrovoc/c_7169 http://aims.fao.org/aos/agrovoc/c_765 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_3093 forêt tropicale humide Insecta substance nutritive écologie forestière champignon du sol Champignon faune du sol Bacteria forêt tropicale biologie du sol dynamique des populations biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_3890 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_3044 http://aims.fao.org/aos/agrovoc/c_33550 http://aims.fao.org/aos/agrovoc/c_3145 http://aims.fao.org/aos/agrovoc/c_7169 http://aims.fao.org/aos/agrovoc/c_765 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_3093 Peguero, Guille Ferrín, Miquel Sardans, Jordi Verbruggen, Erik Ramírez-Rojas, Irene Van Langenhove, Leandro Verryckt, Lore T. Murienne, Jerome Iribar, Amaia Zinger, Lucie Grau, Oriol Orivel, Jérôme Stahl, Clément Courtois, Elodie A. Asensio, Dolores Gargallo‐Garriga, Albert LLusià, Joan Margalef, Olga Ogaya, Romà Richter, Andreas Janssens, Ivan A. Peñuelas, Josep Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients |
description |
Understanding the mechanisms that drive the change of biotic assemblages over space and time is the main quest of community ecology. Assessing the relative importance of dispersal and environmental species selection in a range of organismic sizes and motilities has been a fruitful strategy. A consensus for whether spatial and environmental distances operate similarly across spatial scales and taxa, however, has yet to emerge. We used censuses of four major groups of organisms (soil bacteria, fungi, ground insects, and trees) at two observation scales (1-m2 sampling point vs. 2,500-m2 plots) in a topographically standardized sampling design replicated in two tropical rainforests with contrasting relationships between spatial distance and nutrient availability. We modeled the decay of assemblage similarity for each taxon set and site to assess the relative contributions of spatial distance and nutrient availability distance. Then, we evaluated the potentially structuring effect of tree composition over all other taxa. The similarity of nutrient content in the litter and topsoil had a stronger and more consistent selective effect than did dispersal limitation, particularly for bacteria, fungi, and trees at the plot level. Ground insects, the only group assessed with the capacity of active dispersal, had the highest species turnover and the flattest nonsignificant distance−decay relationship, suggesting that neither dispersal limitation nor nutrient availability were fundamental drivers of their community assembly at this scale of analysis. Only the fungal communities at one of our study sites were clearly coordinated with tree composition. The spatial distance at the smallest scale was more important than nutrient selection for the bacteria, fungi, and insects. The lower initial similarity and the moderate variation in composition identified by these distance-decay models, however, suggested that the effects of stochastic sampling were important at this smaller spatial scale. Our results highlight the importance of nutrients as one of the main environmental drivers of rainforest communities irrespective of organismic or propagule size and how the overriding effect of the analytical scale influences the interpretation, leading to the perception of greater importance of dispersal limitation and ecological drift over selection associated with environmental niches at decreasing observation scales. |
format |
article |
topic_facet |
forêt tropicale humide Insecta substance nutritive écologie forestière champignon du sol Champignon faune du sol Bacteria forêt tropicale biologie du sol dynamique des populations biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_3890 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_3044 http://aims.fao.org/aos/agrovoc/c_33550 http://aims.fao.org/aos/agrovoc/c_3145 http://aims.fao.org/aos/agrovoc/c_7169 http://aims.fao.org/aos/agrovoc/c_765 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_3093 |
author |
Peguero, Guille Ferrín, Miquel Sardans, Jordi Verbruggen, Erik Ramírez-Rojas, Irene Van Langenhove, Leandro Verryckt, Lore T. Murienne, Jerome Iribar, Amaia Zinger, Lucie Grau, Oriol Orivel, Jérôme Stahl, Clément Courtois, Elodie A. Asensio, Dolores Gargallo‐Garriga, Albert LLusià, Joan Margalef, Olga Ogaya, Romà Richter, Andreas Janssens, Ivan A. Peñuelas, Josep |
author_facet |
Peguero, Guille Ferrín, Miquel Sardans, Jordi Verbruggen, Erik Ramírez-Rojas, Irene Van Langenhove, Leandro Verryckt, Lore T. Murienne, Jerome Iribar, Amaia Zinger, Lucie Grau, Oriol Orivel, Jérôme Stahl, Clément Courtois, Elodie A. Asensio, Dolores Gargallo‐Garriga, Albert LLusià, Joan Margalef, Olga Ogaya, Romà Richter, Andreas Janssens, Ivan A. Peñuelas, Josep |
author_sort |
Peguero, Guille |
title |
Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients |
title_short |
Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients |
title_full |
Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients |
title_fullStr |
Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients |
title_full_unstemmed |
Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients |
title_sort |
decay of similarity across tropical forest communities: integrating spatial distance with soil nutrients |
url |
http://agritrop.cirad.fr/606863/ http://agritrop.cirad.fr/606863/1/606863.pdf |
work_keys_str_mv |
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dig-cirad-fr-6068632024-01-29T19:05:15Z http://agritrop.cirad.fr/606863/ http://agritrop.cirad.fr/606863/ Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients. Peguero Guille, Ferrín Miquel, Sardans Jordi, Verbruggen Erik, Ramírez-Rojas Irene, Van Langenhove Leandro, Verryckt Lore T., Murienne Jerome, Iribar Amaia, Zinger Lucie, Grau Oriol, Orivel Jérôme, Stahl Clément, Courtois Elodie A., Asensio Dolores, Gargallo‐Garriga Albert, LLusià Joan, Margalef Olga, Ogaya Romà, Richter Andreas, Janssens Ivan A., Peñuelas Josep. 2022. Ecology, 103 (2):e03599, 11 p.https://doi.org/10.1002/ecy.3599 <https://doi.org/10.1002/ecy.3599> Decay of similarity across tropical forest communities: Integrating spatial distance with soil nutrients Peguero, Guille Ferrín, Miquel Sardans, Jordi Verbruggen, Erik Ramírez-Rojas, Irene Van Langenhove, Leandro Verryckt, Lore T. Murienne, Jerome Iribar, Amaia Zinger, Lucie Grau, Oriol Orivel, Jérôme Stahl, Clément Courtois, Elodie A. Asensio, Dolores Gargallo‐Garriga, Albert LLusià, Joan Margalef, Olga Ogaya, Romà Richter, Andreas Janssens, Ivan A. Peñuelas, Josep eng 2022 Ecology forêt tropicale humide Insecta substance nutritive écologie forestière champignon du sol Champignon faune du sol Bacteria forêt tropicale biologie du sol dynamique des populations biodiversité http://aims.fao.org/aos/agrovoc/c_7976 http://aims.fao.org/aos/agrovoc/c_3890 http://aims.fao.org/aos/agrovoc/c_5274 http://aims.fao.org/aos/agrovoc/c_3044 http://aims.fao.org/aos/agrovoc/c_33550 http://aims.fao.org/aos/agrovoc/c_3145 http://aims.fao.org/aos/agrovoc/c_7169 http://aims.fao.org/aos/agrovoc/c_765 http://aims.fao.org/aos/agrovoc/c_24904 http://aims.fao.org/aos/agrovoc/c_7160 http://aims.fao.org/aos/agrovoc/c_6111 http://aims.fao.org/aos/agrovoc/c_33949 France Guyane française http://aims.fao.org/aos/agrovoc/c_3081 http://aims.fao.org/aos/agrovoc/c_3093 Understanding the mechanisms that drive the change of biotic assemblages over space and time is the main quest of community ecology. Assessing the relative importance of dispersal and environmental species selection in a range of organismic sizes and motilities has been a fruitful strategy. A consensus for whether spatial and environmental distances operate similarly across spatial scales and taxa, however, has yet to emerge. We used censuses of four major groups of organisms (soil bacteria, fungi, ground insects, and trees) at two observation scales (1-m2 sampling point vs. 2,500-m2 plots) in a topographically standardized sampling design replicated in two tropical rainforests with contrasting relationships between spatial distance and nutrient availability. We modeled the decay of assemblage similarity for each taxon set and site to assess the relative contributions of spatial distance and nutrient availability distance. Then, we evaluated the potentially structuring effect of tree composition over all other taxa. The similarity of nutrient content in the litter and topsoil had a stronger and more consistent selective effect than did dispersal limitation, particularly for bacteria, fungi, and trees at the plot level. Ground insects, the only group assessed with the capacity of active dispersal, had the highest species turnover and the flattest nonsignificant distance−decay relationship, suggesting that neither dispersal limitation nor nutrient availability were fundamental drivers of their community assembly at this scale of analysis. Only the fungal communities at one of our study sites were clearly coordinated with tree composition. The spatial distance at the smallest scale was more important than nutrient selection for the bacteria, fungi, and insects. The lower initial similarity and the moderate variation in composition identified by these distance-decay models, however, suggested that the effects of stochastic sampling were important at this smaller spatial scale. Our results highlight the importance of nutrients as one of the main environmental drivers of rainforest communities irrespective of organismic or propagule size and how the overriding effect of the analytical scale influences the interpretation, leading to the perception of greater importance of dispersal limitation and ecological drift over selection associated with environmental niches at decreasing observation scales. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/606863/1/606863.pdf text cc_by_nc info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc/4.0/ https://doi.org/10.1002/ecy.3599 10.1002/ecy.3599 info:eu-repo/semantics/altIdentifier/doi/10.1002/ecy.3599 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1002/ecy.3599 info:eu-repo/semantics/dataset/purl/https://doi.org/10.6084/m9.figshare.16615873.v1 info:eu-repo/grantAgreement/ERC//ANR-10-LABX-2501//(FRA) CEnter of the study of Biodiversity in Amazonia/CEBA info:eu-repo/grantAgreement/ERC//ANR-11-INBS-0001//(FRA) ANAEE-Services/ANAEE-FR |